Rocker Sting is campaigning to stop British prime minister Tony Blair
from upgrading the legal categorisation of cannabis from a class C to
class B drug.

The
Roxanne hitmaker fears the political leader is planning a high-profile
policy u-turn which will see him vow to tackle drug use head-on and
reclassify the drug, despite officially downgrading it from class B to
its current status in January.

Sting, 54, has added his
signature to a letter for Blair alongside those of actress Jean Simmons
and former Spandau Ballet star Gary Kemp, insisting the
reclassification has been a success, saving up to 200,000 hours of
police time.

The letter reads: "Such a move would simply add to
public confusion, inconsistency and the waste of police resources,
without delivering any health or social benefits."